Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb5177bff284ef25…

MALICIOUS

PDF

45.6 KB Created: 2020-08-15 07:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dcc576fde55b1d757364a61b1814d1a SHA-1: 02409fafb984f9814c522ebbdea56dca67bfe7fe SHA-256: fb5177bff284ef259c1321ef9bd5bc7c3d2fd50788053cddd2e5cac842e9f6e9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=free+printable+coloring+sheets+of+dinosaurs', is designed to redirect users to malicious infrastructure. The document also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains. The primary intent appears to be social engineering users into visiting the malicious redirector under the guise of accessing free coloring sheets.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=free+printable+coloring+sheets+of+dinosaurs
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdf
    • http://diwuvavo.maiganlynnart.com/uploads/1/3/1/4/131453540/pukuve.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/25734479566.pdf
    • https://cdn.shopify.com/s/files/1/0434/3352/5400/files/lirojujobesazakotibokusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80884551140.pdf
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/wokopotimepewawegafabanim.pdf
    • https://cdn.shopify.com/s/files/1/0451/8169/8199/files/wenirewelopudav.pdf
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/pasitod.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/61300950207.pdf
    • https://cdn.shopify.com/s/files/1/0435/5411/1656/files/xonuzemebowimirojotaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/clinical_pharmacy_by_parthasarathy_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/jugojokubimadiwunaxozoto.pdf
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/tasemipigamudid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006788.bin
c5310af3b4db11828afc7eb9fa3b973e3385ad95d1b7bba388dcc7d574b52726
pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 5396 bytes
font_01_sfnt_off000079c0.bin
80a7af25ad4c8a877c3b802d0a446905c1e9b035f95993c193d61e5ab6d3de19
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C0 9768 bytes
font_02_sfnt_off00009b28.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B28 4324 bytes